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LSI Logic HDTV board plugs into PCI slot

Posted: 26 Apr 2004 ?? ?Print Version ?Bookmark and Share

Keywords:lsi logic? hdtvxpress compressor? pci board? domino? dsp?

LSI Logic Corp. is enhancing its existing real-time MPEG-2 high-definition (HD) HDTVxpress Compressor PCI board with new features that the company claims will make it easier and more cost-effective to develop HD content in a PC environment.

Significantly, the board is based on one of LSI Logic's latest ICs, namely its DoMiNo - a very powerful DSP-based and RISC-equipped SoC.

New features

New features of LSI's HDTVxpress board include support for capture and encode of the 1080p/24fps film format, with real-time compression for archiving and distribution.

The HDTVxpress plug-in also includes a multi-pass variable bit-rate process. The company says that this addresses higher quality video, and frame-accurate start/stop control. Those attributes are also needed for production authoring and video server applications.

The HDTVxpress Compressor PCI encoder board includes an HD-SDI input (meeting SMPTE 292M specs) and a DVB-ASI (Transport) output. Leveraging LSI Logic's DoMiNo silicon architecture, the HDTVxpress Compressor encoder board supports real-time MPEG-2 encoding, and provides video compression for 1920 x 1080-pixels/59.94i, 1440 x 1080-pixels/59.94i, 1280 x 1080-pixels/59.94i, and 1280 x 720-pixels/59.94p resolutions. The DoMiNo architecture is also capable of 4:2:2 LGOP encoding, as well as audio compression.

Digging into the silicon

On the hardware side, the DoMiNo offers true multi-stream and multi-format A/V codec capabilities that supports dual-channel HD decoding with picture-in-picture, quad-channel live previewing for channel selections on HDTV sets, and digital and analog time-shifting.

The IC also supports seamless channel and video clip switching without frame freezes, has audio muting, and handles concurrent execution of multiple tasks. The latter will let you design a product that can record a TV program while a user is watching a DVD movie, for example.

Dual RISCs

The DoMiNo integrates dual 150MIPS RISC processors, an audio DSP, a video and motion estimation processor, and a DRAM controller. It also packs on-chip cache and scratchpad memory, an IEEE-1394 FireWire link, and transport-stream de-multiplexers. An integrated DRAM controller supports up to 64MB of single- or DDR SDRAM.

The chip's dual RISC core provides the necessary processing horsepower to implement additional graphics and host functions. Using the popular VxWorks real-time OS from WindRiver Systems, for example, the IC provides RTOS services, while C-Ware provides signal processing-specific services and high-level APIs.

The chip's integrated I/O processor also touts dual UARTs, IR receive and transmit functions, and an inter-device connection (IDC) interface. It also touts an SPI bus for communicating with flash devices such as SmartMedia cards.

Embedded flexibility

The IC's system bus can also be configured either as a 32-bit 66MHz PCI-2.2-compliant bus, or as a 16-bit or 32-bit generic host bus. It can either operate in Slave Mode with an external host processor, or in a limited Master Mode when using the on-chip dual-RISC core as the host. This makes the DoMiNo suitable for use in embedded as well as in PC-based applications such as the new HDTVxpress Compressor PCI board.

The DoMiNo's signal processing capabilities also support multistream, multiformat A/V encoding and decoding, and so-called transcoding and transrating between different A/V formats and bit rates. An integrated motion estimation processor handles noise reduction and up-conversion to high-resolution display formats.

- Alex Mendelsohn

eeProductCenter





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